<template>
  <div class="todo-header">
        <input type="text" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="AddNewtodo"/>
      </div>
</template>

<script lang="ts">
import { defineComponent } from "vue";

export default defineComponent({
  name: "Header",
});
</script>

<script setup lang="ts">
  const emit = defineEmits<{
    (event:'Addtodo',title:string):void
  }>()
  const AddNewtodo = (e:Event)=>{
    const title = (e.target as HTMLInputElement).value.trim();
    if(!title){
      alert('请输入任务')
      return
    }
    emit('Addtodo',title);
    (e.target as HTMLInputElement).value = '';
  }
</script>

<style  scoped >
  /*header*/
.todo-header input {
  width: 560px;
  height: 28px;
  font-size: 14px;
  border: 1px solid #ccc;
  border-radius: 4px;
  padding: 4px 7px;
}

.todo-header input:focus {
  outline: none;
  border-color: rgba(82, 168, 236, 0.8);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
    0 0 8px rgba(82, 168, 236, 0.6);
}
</style>